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DR. O'NEAL ALFRED WALKER
NPI 1336419563
Psychologist - Clinical in Rockville, MD

Active since January 04, 2012
6237 EXECUTIVE BLVD, ROCKVILLE, MD 20852(240) 426-5859(301) 972-1318 Get Directions Write a Review

NPPES record last updated: February 13, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. O'neal Alfred Walker NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. O'NEAL ALFRED WALKER (NPI 1336419563) is an individual clinical provider in Rockville, Maryland, licensed in Maryland (04000) and active in the NPI registry since January 2012.

NPPES Registry Identity

NPI1336419563
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameDR. O'NEAL ALFRED WALKER
Location Address6237 EXECUTIVE BLVDRockville, MD 20852-3906
Mailing AddressCmr 402 Box 16Apo, AE 09180-1001
Phone(240) 426-5859
Fax(301) 972-1318
Sole ProprietorYes
Enumeration DateJanuary 4, 2012
Last NPPES UpdateFebruary 13, 2025
NPPES CertifiedFebruary 13, 2025
✔ NPI 1336419563 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in MD · 04000
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
6237 EXECUTIVE BLVD, Rockville, MD 20852
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Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. PATRICK CHIH-YUNG CHENG LCPC
Counselor (Professional)
6237 EXECUTIVE BLVD
ROCKVILLE, MD 20852
Montgomery County (240) 464-8000
MEDPSYCH HEALTH SERVICES LLC
Psychiatry & Neurology (Psychiatry)
6237 EXECUTIVE BLVD
ROCKVILLE, MD 20852
Montgomery County (240) 464-8000
MEDPSYCH HEALTH SERVICES LLC
Psychologist (Clinical)
6237 EXECUTIVE BLVD
ROCKVILLE, MD 20852
Montgomery County (240) 464-8000
MEDPSYCH HEALTH SERVICES LLC
Psychiatry & Neurology (Psychiatry)
6237 EXECUTIVE BLVD
ROCKVILLE, MD 20852
Montgomery County (240) 464-8000
MS. JUDITH W WALKER M.ED., MSW, LCSW
Counselor (Mental Health)
6237 EXECUTIVE BLVD
ROCKVILLE, MD 20852
Montgomery County (301) 378-2737

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is O'neal Walker's NPI number?

The NPI number for O'neal Walker is 1336419563. It was assigned to this individual provider in the NPPES registry on January 4, 2012.

Where is O'neal Walker located?

O'neal Walker practices at 6237 Executive Blvd, Rockville, MD 20852. The listed phone number is (240) 426-5859.

What is O'neal Walker's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

When was this NPI record last updated?

The NPPES record for O'neal Walker was last updated on February 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.